Printing-telegraph system



A. 'D. DOWD,

PRINTING TELEGRAPH SYSTEM.

APPLICATION FILED APR. 17,19I8.

1,432,978. Patented Oct. 24, 1922.

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ANDREW D. IDOWD, OF HOBOKEN, NEW J'ERSEY, ASSIGNOR TO WESTERN ELECTRIC COMPANY, INCOREORATED, OFNEW YORK, 1\T.

YORK.

Y., A CORPORATION OF NEW PRINTING-TELEGRAPH SYSTEM.

Application filedApril 17, 1918. Serial No. 229,112.

To all whom it may concern.

Be it known that I ANDREW D. Down a citizen of the United tates residin at 1 loboken, in the county of I-ludson, itate of New Jersey, have invented certain new and useful Improvements in Printing-Telegraph Systems, of which the following is a full, clear, concise, and exact description.

This invention relates to printing telegraph systems and has particular reference to improvements in keyboard mechanism.

It has for its object to provide an improved keyboard mechanism, which is associated with a tape perforating device and in addition is adapted when deslred to operate a signal transmitting mechanism.

A further object is to provide such a mechanism which is compact and inexpensive to manufacture, readily accessible for adjustment or removal and operating with little wear on its parts to effect the results for which it was intended.

To this end the invention comprises a keyboard mechanism associated with a tape perforating device of the type disclosed in United States Patent 1,161,500 to B. F. Merritt, patented November 23, 1915. Whenever a key is depressed, one or more of a ,plurality of bars are selectively actuated to 80 effect the proper perforation of the tape in accordance with the signal representing the character to be transmitted. At the same time a plurality of transmitting switches corresponding in number to the selectively 8B "actuated bars are adapted to be closed in accordance with the movement of the bars. The closure of these switches may in a suitable manner cause the storing up of signals for later transmission over a line, or may to put potential on the segments of a distributor so that when the .distributor arm rotates in a well known manner, the proper impulses are transmitted over the line.

The invention is represented in the drawing, of which Fig. 1 represents a partial longitudinal section on the line 1-1 of Fig. 2; andjFig. 2 represents a partial plan View of the keyboard perforator.

As illustrated in the drawings, 1 repre sents the frame of the-keyboard in which are transversely mounted a plurality of bars 2. These bars are slidably mounted on rods 3 and when actuated by any one of the key levers 4 is adapted to move a bell crank lever 5, to effect the perforation of the tape as is set forth in the above 'mentioned patent. Fastened to the frame 6 of the perforator by means of screws 7 is a U-shaped frame 8, whlch 1s so arranged that the bell crank levers 5 extend upwardly between the limbs thereof. This U-shaped member 8 extends horizontally over the bars 2 and upon it are mounted a plurality of transmitting switches 9. Each transmitting switch comprises a spring member 10 which, at one end, is fastened to a metal piece 11. To the other end of this spring 10 is fastened an insulated portion 12 which is adapted to bear on the top of bell crank lever 5. The metallic member 11 is suitably fastened to an insulating base portion 13. This in turn is fastened to a metallic plate 14:. The metallic plate 14 is adjustably mounted on the U-shaped member 8 by screws 15 and 16 so that metallic member 14, insulating member 13 and the springs 10 may be ad uSted vertically, both with respectto the U-sha ed member 8 and the bell crank levers 5. rojecting through one end of the insulating member 13 are a plurality of contact pieces 17 the lower ends of which are suitably connected to circuit wires. The upper ends of these contact members 17 are adapted, when the spring switch members 10 are moved downwardly, to make contact with contact pieces 18 thereon and thereby close a circuit leading through contact member 17 spring member 10', metal portion 11 and thence along a wire connected to member 11 to the proper portion of the circuit. Each of the spring members 10 is conductively connected to member 11.

Upon the depression of any of the key levers 4, each of which has a plurality of plugs thereon positioned in accordance with the signal to be transmitted, one or more of the bars 2 are moved downwardly and to the right, thus moving one or more of bell crank levers 5 and lowering the respective switch members 10, thereby causing them to close their contacts. At the same time that the switch members 10 are operated, the forward portion 19 of the bell crank lever 5 is projected between a perforating member 20 and a perforating hammer 21 to cause the perforation of the tape 22 in the'manner set forth in the above-mentioned patent. A curved cover plate 23 is adapted to be placed over the switch mechanism and is attached to the. frame 1 of the keyboard by suitable means.

What is claimed is:

1. In a combined perforator and transmitter, the combination with a pluarity of key levers and a plurality of bars selectively operated by said key levers in groups, ofa plurality of perforating punches, a plurality of switches, and means operateddirectly by said bars for actuating'said contacts and conditioning said punches for operation in accordance with the bars operated. a

2. In a combined perforator and transmitter, the combination with a plurality of key levers and a plurality of bars selectively moved by said keys in predetermined groups along paths diagonal to their normal position, of a perforating device and a plurality of switches selectively operated in accordance with the bars that are operated.

3. In a combined perforator and transmitter, the combination with a plurality of bars, a plurality of key levers provided with means for selectively operating said bars, of a plurality of levers operated by said bars, a perforating device having a plurality of perforating punches controlled by said levers, and a plurality of switches selectively closed by said levers.

4. In a combined perforator and trans mitter, the combination with a plurality of key levers and a plurality of bars selectively moved by said keys in predetermined groups along paths diagonal to their normal position, of a plurality of levers operated by said bars, a perforating device having a plurality of perforating punches controlled by said levers, and a plurality of switches selectively closed by said levers. 5. In a combined perforator and transmitter, the combination with a plurality of bars, a plurality of key levers provided with means for selectively operating said bars, of a plurality of toggle levers operated by said bars, and a plurality of perforatin punches and switches selectively operate by said toggle levers when their toggle connections are straightened in accordance with the bars that are operated.

6. In a combined perforator and transmitter, the combination with a plurality of bars, a lurality of key levers provided with means or selectively operating said bars, of a plurality of toggle levers operated by said bars, a plurality of perforating punches controlled by said levers, a plurality of switches comprising pairs of cooperating contacts, resilient movable leve'r's carrying one contact of each pair and resting upon the toggle connection of said toggle levers whereby they are permitted to move the contacts carried thereby into engagement with their associated contacts when the toggle connections of said levers are'straightened.

7. In a combined perforator and transmitter, the combination with a plurality of key levers and a plurality of bars selectively moved by said keys in predetermined groups along paths diagonal to their normal position, of a'plurality of toggle levers operated by said bars, and a plurality of perforating punches and switches selectively operated by said toggle levers when their toggle connections are straightened by the diagonal movement of'the said bars.

8. A transmitter comprising a plurality of key levers and a plurality of bars selectively moved by said keys in predetermined groups along paths diagonal to their normal position, a plurality of toggle levers operated by said bars and a plurality of switches selectively operated by said togglelevers when their toggle connections are straightlined by the diagonal movement of the said ars.

9. A transmitter comprising a plurality of key levers and a plurality of bars selectively moved by said keys in predetermined groups, a plurality of toggle levers operated by said bars and a plurality of switches selectively operated by said toggle levers when their toggle connections are straightened by the movement of the said bars.

10. In a combined perforator and transmitter, the combination with a plurality of key levers and a plurality of barsselectively moved 'by said keys in predetermined groups, perforating mechanism conditioned for operation directly by the movement of said bars, and a plurality of switches selectively operated by said bars in accordance with the bars that are operated.

11. In a combined perforator and transmitter, the combination with a plurality of bars and a plurality of key levers for selectively operating said bars, a plurality of perforating punches and switches one corresponding to each of said bars, and mechanical means operated directly by said bars for controlling the operation of said punches and switches in accordance with the bars that are operated.

12. In a combined perforator and transmitter, the combination with a plurality of key levers and a lurality of bars selectively moved by said key levers in predetermined groups, of a perforating device, a pluralit of switches, and mechanical means actuate directly by said bars for controlling the operation of said perforating device and said switches in accordance with the bars that are operated.

In witness whereof,-I hereunto subscribe my name this 11th day of April, A. D., 1918.

' ANDREW 1). Down. 

